I tend to agree with the fact that there seem to be a lot of what are essentially talking points, that recur.

I think this comes from any widespread difference of opinion. The people generally do believe what they are saying, but when it gets to the point where arguments and counterarguments go back and forth unchanged it seems more like declaring their position than trying to convince others.

People can legitimately share a common belief and talk about it. So similar thinga can turn up in good faith. We just have to remember not to talk past each other.